Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
austur
←
Proto-Germanic
*austrą
(derived)
←
Icelandic
ausa
(mention)
←
Old Norse
austr
(derived)
→
Icelandic
norðaustur
(compound)
→
Icelandic
suðaustur
(compound)
→
Icelandic
Austurland
(compound)